From nobody Sun May 5 15:30:10 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9C1FC433F5 for ; Mon, 23 May 2022 11:11:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234683AbiEWLLx (ORCPT ); Mon, 23 May 2022 07:11:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234522AbiEWLLv (ORCPT ); Mon, 23 May 2022 07:11:51 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 439AA19F89 for ; Mon, 23 May 2022 04:11:50 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id fw21-20020a17090b129500b001df9f62edd6so10792923pjb.0 for ; Mon, 23 May 2022 04:11:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=l5BnpyT21XxmPEltzzCAln/RtmxzwllCEL8G3E1N/fc=; b=KABL5hpsiMRjUN5/8tnsKM1eG36tCM6CN5WjGMrOIzb9gaR5xpba37erhgDZmN0lXJ 9U24mJHt31S60KaPAHRFSbE8N95K7qQBjWakaI7KpUAFXl0NQFYap8HgSkH7IjavJoOB IQ9EdIj5aiR/ywpgF15fQ5WTmEcbq06e+l9MO8l/zuvjqB76iIo2JJBLXVbvNi2yjfBL 9a9MSRgPbAKuRdPKPXdKNu0biJ4HHjR09irLAtuTLLP0oA5ciEuLk5sj20mp98t5J+D7 yBTj47Gxs+2Y1t2zgQtXI4LPtKC9EsdTHSBDi6Clq1rD/fx4bgW5TW4kduKCjhPNisbb ecig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=l5BnpyT21XxmPEltzzCAln/RtmxzwllCEL8G3E1N/fc=; b=4V/YpkcKMvrcGx0OZoJrrQAw0QF9n9ZXRpicakdIpwpsZ6F+PR7F3RWioKWwYm7DL8 3FB8mSneLE78HF6pm38y/16QGsjPorpmpCDdW6Q3ng8oss6wJ4stEc2xQVz9DC0X83NT QFkcKl+y3iUMXFFo7fwmtK2R5TozZUZ6eKT7ULIIAw5PDw9MJy7C14MLjjZUXVMlz8u4 wcRU/orZSoaLPl8QVwyfAxMkbGKUvAQ0/IW5dAV0Edup+QLsMZO25y7YQQc7WWR4rcG1 teUU+vb+lXIS54mCp0bJtltCCuL2Cx8Sfnf6e4MZqNWyy4w5yWGCmgCnqN0c/geO8Own 1gVg== X-Gm-Message-State: AOAM533lruK/74yI+GKQ6+cK/NGOTdtTsqfgf6HPp8PBStc73vV8ybZT 6YZhyc+29FQ0rJBPnhUN3ZssAaWICIc= X-Google-Smtp-Source: ABdhPJwzc2locnUHLd9zvUFe31j5Q893w4ciZJAyxd61TfgGUxaEunrUjdF6HHe+c518HQPoozEJvg== X-Received: by 2002:a17:902:7483:b0:161:ff6a:402b with SMTP id h3-20020a170902748300b00161ff6a402bmr12788392pll.89.1653304309520; Mon, 23 May 2022 04:11:49 -0700 (PDT) Received: from localhost.localdomain ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id md2-20020a17090b23c200b001df2f8f0a45sm7048321pjb.1.2022.05.23.04.11.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 May 2022 04:11:49 -0700 (PDT) From: cgel.zte@gmail.com X-Google-Original-From: chi.minghao@zte.com.cn To: joro@8bytes.org Cc: will@kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Minghao Chi , Zeal Robot Subject: [PATCH] iommu/ipmmu-vmsa: Avoid leak OF node on error Date: Mon, 23 May 2022 11:11:45 +0000 Message-Id: <20220523111145.2976-1-chi.minghao@zte.com.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Minghao Chi The OF node should be put before returning error in ipmmu_init(), otherwise node's refcount will be leaked. Reported-by: Zeal Robot Signed-off-by: Minghao Chi --- drivers/iommu/ipmmu-vmsa.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 8fdb84b3642b..f6440b106f46 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -1179,11 +1179,10 @@ static int __init ipmmu_init(void) return 0; =20 np =3D of_find_matching_node(NULL, ipmmu_of_ids); + of_node_put(np); if (!np) return 0; =20 - of_node_put(np); - ret =3D platform_driver_register(&ipmmu_driver); if (ret < 0) return ret; --=20 2.25.1